Answer to the following: a. Define the flow work from the energy balance for the control...

Answer to the following:

a. Define the flow work from the energy balance for the control volume system.

b. What is the flow work for the case of steady, incompressible flow?

c. Discuss the physical meaning of the equation for the above case b.

d. Discuss the reason why the flow work of a heat pump must be minimized.

e. Discuss which process is the best for a heat pump among the isentropic, polytropic, and isothermal processes in terms of the P-v property diagram

Expert Solution

Please note: Images a,b,c, and e are related to the respective part of the answer.

(a)FLOW WORK

Amount of work required to make the mass flow in or out of the control volume is called open system work or flow work or Flow Energy.. Flow work ensures continuous flow in and out through control volume.

(b)FLOW WORK FOR STEADY, INCOMPRESSIBLE FLOW

Flow work in case of steady and incompressible flow is given using SFEE.

(c) PART C has been solved in image

(d)The pump is a work consuming device, It needs energy in to do the work. In case of heat pump work input is kept as low as possible to maintain decent efficiency. Many times increased work is because of irreversibilities such as friction.

(e)A heat pump is a steady flow device which loses heat but in the assumption, it is assumed to be an isentropic process where no heat transfer takes place an entropy remains constant and work transfer occurs in absence of friction.

samet mamat answered 8 months ago

Answer the following questions: a. Define expansion work vs. non-expansion work. b. Referring to the definition...

Answer the following questions: a. Define expansion work vs. non-expansion work. b. Referring to the definition of the Gibbs energy (Eq. 6.9 in your text), show that dG represents the maximum amount of non-expansion work that a system can perform at constant T, and P. c. Explain why G is referred to as a thermodynamic potential.

Answer the following: a. Find the energy needed to excite an electron in hydrogen from the...

Answer the following: a. Find the energy needed to excite an electron in hydrogen from the ground state to the n=5 excited state. b. What is the wavelength and frequency of the photon emitted when this electron relaxes to the n=2 state? c. How much energy would it take to remove an electron from hydrogen? (transition from n=1 to n=∞)

ESSAY QUESTIONS 8 Define the concepts of energy, work and power and explain how they are...

ESSAY QUESTIONS 8 Define the concepts of energy, work and power and explain how they are related. Provide an example of a conceptual physics problem that might involve all three factors.

From the following balance sheet and additional information given, prepare cash flow statement. Balance Sheet as...

From the following balance sheet and additional information given, prepare cash flow statement. Balance Sheet as on March 31, 2005 and 2006 Particulars 2005 Rs. 2006 Rs. Particulars 2005 Rs. 2006 Rs. Share Capital 9,00,000 9,00,000 Fixed Assets 8,00,000 6,40,000 General Reserve 6,00,000 6,20,000 Investments 1,00,000 1,20,000 Profit & loss a/c 1,12,000 1,36,000 Stock 4,80,000 4,20,000 Creditors 3,36,000 2,68,000 Debtors 4,20,000 9,10,000 Provision for tax 1,50,000 20,000 Bank 2,98,000 3,94,000 Mortgage loan - 5,40,000 20,98,000 24,84,000 20,98,000 24,84,000 Additional Information:...

a) What is flow work? Which term(s) in the energy equation for an open system represent...

a) What is flow work? Which term(s) in the energy equation for an open system represent the flow work? b) What is the Reynolds transport theorem? Why is it needed for open systems (control volumes)?

Calories _ = Calories _ is necessary to maintain energy balance and weight. Define overweight, underweight...

Calories ___ = Calories ___ is necessary to maintain energy balance and weight. Define overweight, underweight and obesity. Discuss the hazards of obesity. What portion of the brain controls hunger? Define the terms: Hunger- Appetite- Satiation- Satiety- List types of influences that make us want or need to eat. What influences our energy requirements or obesity? What is BMR? What is BMI? Calculate your BMI. Why is waist circumference important? (waist-to-hip ratio) Compare the relationship between body weight and body...

a. Define self-concept and where it comes from b. Define self-control and how it relates to...

a. Define self-concept and where it comes from b. Define self-control and how it relates to automatic thinking c. Explain the Two-factor theory of Emotion and misattribution of arousal

Answer the following questions based on the following financial information taken from the trial balance for...

Answer the following questions based on the following financial information taken from the trial balance for New Day, Inc: Year 2 Year 1 Account title Debit (Credit) Debit(Credit) Cash 281,000 297,000 Accounts receivable 12,000 14,000 Prepaid expenses 2,000 8,000 Inventory 581,000 321,000 PPE 926,000 926,000 Accumulated Deprn (581,000) (581,000) Patents 19,000 19,000 Accounts Payable (11,000) (17,000) Interest Payable (3,000) (4,000) Bonds Payable (750,000) (750,000) Common Stock (50,000) (50,000) Retained Earnings (426,000) ...

1. For airflow through a fan, the mechanical energy balance with fan work along with conservation...

1. For airflow through a fan, the mechanical energy balance with fan work along with conservation of mass are: -W(dot)fan=sum((m(dot)_exit)*(e_exit)) - sum((m(dot)_inlet)*(e_inlet)) so... 0=sum(m(dot)_exit) - sum(m(dot)_inlet) Using the mechanical energy balance and conservation of mass, show that the theoretical fan power added to the air is flow rate multiplied by the pressure rise: W(dot)fan=?*?*P

Define free cash flow Group of answer choices The total change in cash for the firm...

Define free cash flow Group of answer choices The total change in cash for the firm or project The cash flow that is paid out to investors through dividends, stock repurchases, and debt coupons/interest The cash flow that is available to be paid out to investors, regardless of the method of payment (dividends, stock repurchases, interest payments) The cash flow that is paid out to equity investors through dividends or stock repurchases

Question